Insert a new row at specified position in a Google Sheet
AI agents use insert_row to create or update resources in Google Sheets MCP — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Google Sheets MCP environment.
This tool modifies spreadsheet data by inserting a new row at a specified position. This is a Write operation because it creates/adds data that can be undone (rows can be deleted). It is not Destructive because insertion is reversible and does not permanently erase data.
From the tool's definition Tool name 'insert_row' and description 'Insert a new row at specified position in a Google Sheet' indicate data modification. The action creates/adds a new row, which is a reversible write operation rather than a destructive delete or irreversible operation.
Documented attack patterns abuse exactly the kind of access insert_row gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Google Sheets MCP, and nothing reaches the server without passing your rules. This is the rule we recommend for insert_row:
{
"version": "1",
"default": "deny",
"tools": {
"insert_row": {
"limits": [
{
"counter": "insert_row_rate",
"window": "minute",
"max": 30,
"scope": "grant"
}
]
}
}
}insert_row stays usable, but capped — an agent stuck in a loop can't make hundreds of changes a minute. Everything else on the server is denied unless you say otherwise.
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Insert a new row at specified position in a Google Sheet. It is categorised as a Write tool in the Google Sheets MCP MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the Google Sheets MCP server in PolicyLayer and add a rule for insert_row: allow, deny, rate-limit, or require approval. Point your MCP client at the PolicyLayer proxy URL and the rule is enforced on every call, before it reaches Google Sheets MCP. Nothing to install.
insert_row is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.
Yes. Add a rate_limit block to the insert_row rule in your PolicyLayer policy. For example, setting max: 10 and window: 60 limits the tool to 10 calls per minute. Rate limits are tracked per agent session and reset automatically.
Set action: deny in the PolicyLayer policy for insert_row. The AI agent will receive a policy violation error and cannot call the tool. You can also include a reason field to explain why the tool is blocked.
insert_row is provided by the Google Sheets MCP server (mkummer225/google-sheets-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Google Sheets MCP, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
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15 Google Sheets MCP tools catalogued and risk-classified — across an index of 43,000+ MCP servers.